EP2096467A3 - Transmitter of a system for detecting a buried conductor - Google Patents

Transmitter of a system for detecting a buried conductor Download PDF

Info

Publication number
EP2096467A3
EP2096467A3 EP09250576A EP09250576A EP2096467A3 EP 2096467 A3 EP2096467 A3 EP 2096467A3 EP 09250576 A EP09250576 A EP 09250576A EP 09250576 A EP09250576 A EP 09250576A EP 2096467 A3 EP2096467 A3 EP 2096467A3
Authority
EP
European Patent Office
Prior art keywords
signal
buried conductor
transmitter
detecting
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09250576A
Other languages
German (de)
French (fr)
Other versions
EP2096467A2 (en
EP2096467B1 (en
Inventor
John Mark Royle
Richard Pearson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Radiodetection Ltd
Original Assignee
Radiodetection Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Radiodetection Ltd filed Critical Radiodetection Ltd
Publication of EP2096467A2 publication Critical patent/EP2096467A2/en
Publication of EP2096467A3 publication Critical patent/EP2096467A3/en
Application granted granted Critical
Publication of EP2096467B1 publication Critical patent/EP2096467B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
    • G01R29/085—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning for detecting presence or location of electric lines or cables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/022—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/432—Two or more amplifiers of different type are coupled in parallel at the input or output, e.g. a class D and a linear amplifier, a class B and a class A amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geophysics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

A system 1 for detecting a buried conductor 7 comprises a transmitter 3 for generating a test signal in the buried conductor 7 and a detector 5 for detecting an electromagnetic signal 11 resulting from the test signal flowing in the buried conductor 7. The transmitter 3 comprises a waveform generator 41 for generating a drive waveform signal 47, a power supply 25, an amplifier 45, 51 connected to the power supply 25 and the waveform generator 41 for producing an output drive signal based on the drive waveform signal 47 and an output circuit 33 for acting on the output drive signal to generate an output signal having a current and a voltage. In-phase and quadrature components of the current and voltage of the output signal are fed back for controlling the amplifier 45, 51.
EP09250576.7A 2008-02-29 2009-02-27 Transmitter of a system for detecting a buried conductor Active EP2096467B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0803871.3A GB2457953B (en) 2008-02-29 2008-02-29 Transmitter of a system for detecting a buried conductor

Publications (3)

Publication Number Publication Date
EP2096467A2 EP2096467A2 (en) 2009-09-02
EP2096467A3 true EP2096467A3 (en) 2011-03-16
EP2096467B1 EP2096467B1 (en) 2020-06-17

Family

ID=39315812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09250576.7A Active EP2096467B1 (en) 2008-02-29 2009-02-27 Transmitter of a system for detecting a buried conductor

Country Status (5)

Country Link
US (1) US7994770B2 (en)
EP (1) EP2096467B1 (en)
CN (2) CN201749195U (en)
CA (1) CA2656659C (en)
GB (1) GB2457953B (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8264226B1 (en) 2006-07-06 2012-09-11 Seektech, Inc. System and method for locating buried pipes and cables with a man portable locator and a transmitter in a mesh network
GB2457953B (en) * 2008-02-29 2012-02-08 Radiodetection Ltd Transmitter of a system for detecting a buried conductor
GB2457954B (en) * 2008-02-29 2012-04-04 Radiodetection Ltd A detector for detecting a current carrying conductor and a method of validating operations of the detector
DE102010063546A1 (en) * 2010-12-20 2012-06-21 Robert Bosch Gmbh cable Locator
DE102011079261A1 (en) * 2011-07-15 2013-01-17 Hilti Aktiengesellschaft Apparatus and method for detecting a power line in a ground
DE102011079258A1 (en) * 2011-07-15 2013-01-17 Hilti Aktiengesellschaft Method and device for detecting an object in a ground
CN102509491B (en) * 2011-10-17 2016-03-02 荣莘电子科技（上海）有限公司 Subject two instruction examines the region detection system and method for utilization of area LFMC
US8952677B2 (en) * 2011-11-04 2015-02-10 Radiodetection Ltd. Locator for locating a current carrying conductor
US9769366B2 (en) * 2012-07-13 2017-09-19 SeeScan, Inc. Self-grounding transmitting portable camera controller for use with pipe inspection system
CN103336307B (en) * 2013-06-25 2016-08-24 杭州展悦科技有限公司 A kind of big electric current low frequency transmitter
US9407283B2 (en) * 2013-10-17 2016-08-02 Analog Devices Global Delta-sigma modulator having sensor front-end
US10459105B2 (en) * 2014-07-17 2019-10-29 The Charles Machine Works, Inc. Airborne locator of an underground object
US10877176B2 (en) * 2014-07-17 2020-12-29 The Charles Machine Works, Inc. Airborne locator of an underground object
CN104597507B (en) * 2015-02-02 2017-05-31 广东盛华德通讯科技股份有限公司 A kind of low frequencies circuit of pipe and cable detector
US9857494B2 (en) 2015-12-01 2018-01-02 Mclaughlin Group, Inc. System and method for locating an underground utility
US9877152B2 (en) * 2016-03-08 2018-01-23 Metrotech Corporation Auto-locate operation
CN106873043B (en) * 2017-04-14 2018-10-23 吉林大学 A kind of shallow earth's surface magnetic source transmitter and its control method of double-loop feedbackc
CN108490493A (en) * 2018-03-19 2018-09-04 重庆轻足迹电子有限公司 Conducting wire detection device
US11397266B2 (en) 2018-08-29 2022-07-26 Subsite, Llc GPS assisted walkover locating system and method
CN111578785A (en) * 2020-04-30 2020-08-25 南京理工大学 Multi-mode detection device and method based on composite magnetoelectric sensor
CN113067553B (en) * 2021-03-17 2022-09-27 中国科学院近代物理研究所 Electronic cooling modulation method and device for feedback type pulse linear amplification
US11828898B1 (en) 2023-04-30 2023-11-28 Exodigo Ltd. Detecting underground utilities

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040137856A1 (en) * 2002-12-24 2004-07-15 Masayuki Kanazawa Negative feedback amplifier for transmitter, transmitter, and method of correcting error in the negative feedback amplifier
US20050156600A1 (en) * 2002-10-09 2005-07-21 Olsson Mark S. Single and multi-trace omnidirectional sonde and line locators and transmitter used therewith
WO2005111662A1 (en) * 2004-05-06 2005-11-24 Metrotech Corporation Method for decoupling interference due to bleedover in a metallic pipe and cable locators
US7091872B1 (en) * 2002-07-01 2006-08-15 Metrotech Corporation Controlled power source for underground line location

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8724960D0 (en) 1987-10-24 1987-11-25 Radiodetection Ltd Cable fault tracing systems
WO1990009601A1 (en) 1989-02-13 1990-08-23 Radiodetection Limited Conductor tracing system
US6356082B1 (en) * 2000-05-26 2002-03-12 Schonstedt Instruments Co. Utility locator radio link
GB0013002D0 (en) * 2000-05-30 2000-07-19 Searle Matthew J Improvements to self-heating food packaging
US6642796B2 (en) 2002-02-15 2003-11-04 Radiodetection Limited Digital phase-quadrature oscillator
US6617856B1 (en) * 2002-02-15 2003-09-09 Radiodetection Limited Electronic marker locator system and method
US6968296B2 (en) 2003-04-04 2005-11-22 Radiodetection Limited Cable detector with decimating filter and filtering method
US7062414B2 (en) * 2003-07-18 2006-06-13 Metrotech Corporation Method and apparatus for digital detection of electromagnetic signal strength and signal direction in metallic pipes and cables
US7285958B2 (en) * 2004-01-15 2007-10-23 Metrotech Corporation, Inc. Method and apparatus for digital detection of electronic markers using frequency adaptation
US7356421B2 (en) * 2004-07-29 2008-04-08 Metrotech Corporation, Inc. Precise location of buried metallic pipes and cables in the presence of signal distortion
GB2457953B (en) * 2008-02-29 2012-02-08 Radiodetection Ltd Transmitter of a system for detecting a buried conductor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7091872B1 (en) * 2002-07-01 2006-08-15 Metrotech Corporation Controlled power source for underground line location
US20050156600A1 (en) * 2002-10-09 2005-07-21 Olsson Mark S. Single and multi-trace omnidirectional sonde and line locators and transmitter used therewith
US20040137856A1 (en) * 2002-12-24 2004-07-15 Masayuki Kanazawa Negative feedback amplifier for transmitter, transmitter, and method of correcting error in the negative feedback amplifier
WO2005111662A1 (en) * 2004-05-06 2005-11-24 Metrotech Corporation Method for decoupling interference due to bleedover in a metallic pipe and cable locators

Also Published As

Publication number Publication date
EP2096467A2 (en) 2009-09-02
EP2096467B1 (en) 2020-06-17
CA2656659A1 (en) 2009-08-29
CN101592739B (en) 2013-03-20
GB2457953A (en) 2009-09-02
GB2457953B (en) 2012-02-08
US20100001731A1 (en) 2010-01-07
GB0803871D0 (en) 2008-04-09
CA2656659C (en) 2016-11-15
US7994770B2 (en) 2011-08-09
CN101592739A (en) 2009-12-02
CN201749195U (en) 2011-02-16

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